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Charge transport in Organic Semiconductors: Role of disorder, correlation by Manoranjan P Singh

1,921 views · Published 13 June 2017 · 40:14 · Indexed 20 September 2026

Channel: International Centre for Theoretical Sciences · 2017 · Science & Technology

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29 May 2017 to 02 June 2017

VENUE: Ramanujan Lecture Hall, ICTS Bangalore

This program aims to bring together people working on classical and quantum systems with disorder and interactions. The extensive exploration, through experiments, simulations and model calculations, of growing correlation lengths associated with the rapid increases of viscosity and relaxation times in classical systems is a major recent development in the study of the glass transition. At the same time, there have also been significant advances, recently, in the effort to combine density functional theory with dynamical mean-field theory (DFT+DMFT) to understand the properties of quantum many-body systems. These involve treating interactions using quantum impurity models, thereby connecting directly to the physics of disordered systems. Another interesting recent direction of investigation is understanding how the interplay of interactions and disorder in quantum many-body systems can lead to ergodic and non-ergodic phases and transitions between them. The common themes of disorder and correlation effects run through this diverse class of problems prompting a discussion on the possibility of developing a broad theoretical framework within which to understand the phenomenology of disordered classical and quantum systems. The main focus of this program will be to assess the recent developments in these two fields on a common and inter-disciplinary platform, and also strategize the future directions and requirements for their implementation. A secondary focus will be on inter-disciplinary aspects, where common and complementary methods can be merged from both sides, to develop self-consistent and efficient numerical techniques for the understanding and prediction of new phases of matter.

 
This program is partially supported by NanoScience division of Oxford Instruments

CONTACT US: [email protected]

PROGRAM LINK: https://www.icts.res.in/program/CQDISCOR2017

Table of Contents (powered by https://videoken.com)
0:00:00 Correlation and Disorder in Classical and Quantum Systems 
0:00:08 Charge transport in Organic Semiconductors: Role of disorder, correlation and morphology 
0:01:45 Organic Semiconductors 
0:03:01 Charge Transport in Disorder Thin Films 
0:04:24 Typical Charge Transport behavior 
0:05:19 Gaussian Disorder Model (GDM)
0:05:26 Monte Carlo Simulations 
0:09:21 GDM: Explanation of Charge transport behavior 
0:10:52 Charge Transport in Disorder Thin Films 
0:11:34 Simulating charge transport in a disordered lattice embedded with aggregates 
0:12:08 Incorporating the effect of morphology on simulation 
0:12:53 Concentration of ordered regions inside host lattice 
0:13:28 Path fraction of carriers 
0:15:28 Dependence of mobility on disorder inside the ordered regions 
0:15:50 Influence of mean energy of DOS of ordered region 
0:16:48 Temperature dependence of mobility 
0:17:59 Negative field dependence of mobility at lower thickness 
0:19:13 Energetic relaxation of the carriers 
0:19:52 Temperature dependence of NFD mobility 
0:20:31 Diffusion of carrier in homogeneous and inhomogeneous systems 
0:25:16 Diffusion of carrier in inhomogeneous systems 
0:31:08 Temporal evolution of the occupation of DOS 
0:34:05 Tail broadening of TOF pulse in homogeneous systems 
0:37:42 Conclusion and Outlook 
0:38:49 Thank you for your attention 
0:38:55 Q&A

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